Packing



prl 14, 1931.4

H. TALENT `1,8(-)0,233

' PACKING vFiled'eb. 14, 1950 INVENTOR Hmm TALENT uw im@ Patented Apr. 14, 1931 PATENT OFFICE HARRY TALENT, OF BUXTON, ENGLAND PACKING Application led February 14, 1930, Serial No. 428,275, and in Great Britain February 18, 1929.

The present invention relates to leather packing for kthe stuffing boxes of engines, pumps and the like, and particularly for use in connection with oil or water.

U An hydraulic packing consisting of a leather ring of U section and having a metal ring disposed between the sides of the U-leather is already known. The use of such a packing is, however, restricted to certain types of ap- 30 paratus where only one layer of packingl is required, so that only moderate pressures can be dealt with.

The object of the invention is to provide a packing which will function satisfactorily over long periods of time, and under conditions of high fluid pressure, say up to four or ive tons per square inch, and especially sudden changes of pressure.

The invention is more particularly de- 2o scribed with reference to the accompanying drawings which shown in cross sectional View two forms of packing by Way of example.

In the construction shown in Figure l three individual leather strips l, 2, 3 of U-shaped cross section are employed, strips l and 2 being placed side by side to form a W, whilst the third strip 3 is interleaved with the first two strips so that each side thereof is located between the sides of one of the other 3o strips. Pairs of adjacent strips are stitched together whilst a further row of stitching secures all the strips together.

In another form of construction shown in Figure 2 a relatively wide strip of leather.

l is folded so as to form a pair of parallel U-shaped leather strips 5, 6, i. e. so as to appear as a W in cross-sectional view whilst another U-shaped leather strip 7 is interleaved therewith so that each side thereof is located between the sides of one of the U- shaped portions 5, 6, of the W-shaped strip t.

The packings may be formed in strips or they may be formed as continuous rings or annulae.

Preferably the packing is composed of oil impregnated leather by treatment of the leather before or after construction of the packings with a suitable oil such as castor oil. The packing is thus rendered pliant and self lubricating.

In witness whereof, I have hereunto signed 'a my name this 24th day of January, 1930.

HARRY TALENT. 

